The number of elephants tiger and wolves which play an important role in the ecosystem for its large...........

General English Sentence Improvement

In the following questions, a sentence has been given in which a group of words has been italicised. Some alternatives are suggested for the group of words, which improves the sentence answer the correct option. If no correction is required than mark ‘e’ as your answer.

The number of elephants, tiger, and wolves, which play an important role in the ecosystem for its large biomass, is dwindling..

their large biomass, are dwindling

their large biomass, is dwindling

their large biomass, is dwindled

its large biomass, are dwindling

No correction required

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Explanation:

Correct Answer is (b).
Explanation: If the subject is ‘the number of’, the singular verb is used. In addition, which denotes the elephants, tiger, and wolves so ‘their’ is correct.
Another example: The number of students is very large.